In this time its supporter apparatus and computer have entered in each;every life aspect and work. Existing computer now have ability which more than simply calculation of ordinary matematik. Among/Between him is computer system in supermarket kassa capable to read expense goods code, central of telephone handling millions of communications and call, computer network and of internet which is connecting various place in the world. Any way appliance processor of data from since ancient era till now we can classify into 4 big faction
1. Equipments of manual: that is very simple data processing equipment, and all important factor in usage of appliance is to use human being hand energy
2. Equipments of Mechanic: that is equipments which have in form of moved mechanic by hand manually
3. Equipments Of Mechanic Electronic: Equipments of mechanic moved by automatically by electronic motor
4. Equipments of Electronic: Laboring Equipments of him electronicly is full off.